Dynamo-electric machine



(No Model.)

0; J. VAN DEPOEL'E. DYNAMO ELBGTRIG MACHINE.

v No. 304,378.; w Patented Sept. 2, 1884.

"STATES: PATENT, OFFICE,

.nforihnnns .VANZ-DEPOELE, or cHIeAeo, vr nnrnois. I I

I-DYN AM'O LEc frm 6- MAC H l N 5.. E.

's1'=nc1rIcA'ri0nfomii-ng sis-amen Patent 210 304,378, dated September 2, 1884;. I Y h pnml onm a March 20,1884; (Ko mctlelll I a Jazz whonti-it m wa Be it knowrigthat IYCH'QSLELIES PQELE, a citizen-iof t cation, reference being had thereinto 'the ae:

I companyingdrawings;

chines; and it consists, especially, in the 'sim.

provements made in dynamo -eleetric1.1na-

plification of construction of the field magnets of such machines- 1 r i The following is a description of the same,- reference being bad to the annexed drawings, forming part of; this specification.

- In the accompanying. drawings similar letf ters indicate similar parts.

Figure 1' shows an endview of the machine, .partly in section; Fig. 2, a side the'same, also partly. in section.'-- Fig. 3 is a perspective view of the two field-cores of the elevation of machine. I i a A is the top field-magnet core, made in one .solid iron casting. The projectionBis east thereto and intended to hold thewireinp1ace;-

' piece with the projectionO and-extensions C.

shaft G. 1 IE is the commutator, the-driving-pulley,

A is the lower field-magnet core, castin one D are the posts carrying the armatureand- H the armature.

10 pp, &c. are brass pinsor studs engaginginthe lower electro-magnet, 'A'. and supporting. the top electro-magnet, A, which-is simply set on top of said pins. It will be seen that my aim in the present case has been to reduce the expense of construction by making the field'- magnets of two independent parts, needing. n'o planing, fitting, nor, in fact, any of the work which in other types of dynamos adds considerably to the cost of production.- I find in practice that it is not necessary to connect the two ends of the field-magnet cores together, as. I have done in my former dynamos, provided I give proper proportions to the field-cores as compared to the armature. As above'stated,- the electro-magnets are kept the proper dis tance apart by means of the brass studs, no screws or bolts being used. The -onlyplaning "J i A i DIE-7 e United; Sit-ates, res'id-l. I ing at Chicago, 'hfthe county of fQoolc..- and State of -".[lli1iois',v have. invented-- certain-new:- and .nseful Improvements in Dynamo-Eleetrie Machines, of: whichthe'following is a spe'eifi- I f armatureHisshown'in dotted linesinFig."2, My'i'nvention relates to new and-useful ini coreof the armaturetends to concentrate the armature.

andtforfthepiirpose set-forth tom; intended; to ccrry;;the or' boxes in required is on" the ;extensions 0, to which the posts'D D are properly bolted from below. e

The winding overthemagnet-cores is done as shown int Figs.'-@1 and 2, wherein -w represent; 5 5' =coils:of, wire whiehenvelop said coreslon' all flfounsides. In 'the case of eleetroplating'ma chines the'gwire is jreplaced by long sheetsof copper properly insulated, as is usual. The 6o and revolves freely within the interiorof-the field-magnets. In operation a powerf1 1lfiel-dof force is produced between thetwo cores A and A and aroundthe armature H. ,The' iron 5 magnetism within the. field where it revolves. As shown in the-difl'erent' figures, the ends of the field-cores are open, so that'the wire or copper conductors can. react directly upon the revolving armature. v v.

The field ma 'net corescan bevaried as to shape without departing fromthe'spirit of ymy invention, provided the two magnetic poles are 7 "placed in proper relation with each, other, and v hot connected'magnetically,soasto formacom' mon magnetic frame of the two 'independent.

1 cores.- As shown, the top core presents a north pole to the top of "armature: while the lowercore'present-s a south pole tothe'undersi'deof (See-Fig. 3.). 1 1 v .Having described th .difl'erent parts Qf II ly invention, 'what I claim as new,- and desire to -secureby Letters Patentyis a 1! In a dynamo-electric; machine, the'field magnets, consisting of. two ,independ'entriron cores, each cast infone solid piece, andsowound and connected with proper conductors as to present two. poles lofidissimiiar name facing" each other, in conihination with an armature" H arranged to' revolve between-the said -ironv 9o fiuenced by the} northand the oth ri hyithe,

south pole of the fieldemagnets', .asidescrihed,

.iem' 'aifieldemee wo-"i/ndep eamsg e mete-{Lone oilsaidnores' xtensionslfromsits'bot- ,-1.1. y d t nets" consisting of t cores, each i cast in; being-provided wit IOO or projection on its top for keeping the wire pendentelectromagnetic cores-having no mag 15 in placeytheinnerfac'e of said cores being-of netic connection between them, wound and proper circular form, so as to envelop nearly connected as described, whereby they present Lone-half of the armature, substantially as de one anorth and. the other a south pole with 5 scribed. regard to the armature, which is arranged to 3, A'dynam'o-eleetrie ma'ehine consisting of, revolve between the said independent electro- 2 c an armature rotating betweentwo independmagnets, substantially as described. ent field-magnets, the latter being held-apart In testimony whereof Ihave afiixed my sigabout the armature by a non-magnetic sub- ,.-nature in presence of two witnesses.

Lo stance dividing the two e1ectro-niagnets,"s0

' that one reacts on one side of the armature, and CHARLES DEPOELE' the other on the other sideof the=arinati1re, Witnesses:

' AARON K. Smiles,

substantially as described. J 4. Ina.dynamo-electriemachine, two inde-- ITHEO. P. BAILEY. 

